Finding an alternative also seems necessary, given that KMPlayer has some unresolved issues. Here Joyoshare Media Cutter
, is recommendable as a trustworthy option. It's capable of rotating videos clockwise and counterclockwise to any 90 degrees in high quality. Also, there is no problem for this smart tool to support all types of multimedia formats, such as HD MKV, WMV, ASF, VOB, M4V, HD MP4, AVI, FLV, MP3, AAC, etc.
Two available modes: lossless high-speed mode and customized encoding mode
With device-compatible formats, like iPhone, Galaxy S8, Song TV, PSP, Xbox 360, etc.
Rotate any kinds of videos right or left to 90, 180, 270 and 360 degrees
Play with built-in media player and visualize the video in the preview window
Multifunctional editor to flip, trim, apply effects, change parameters, watermark, subtitle, crop and more
Step 1 Import a video to Joyoshare Media Cutter
Double-click the program of Joyoshare Media Cutter on your desktop to launch. Next, find the "Open" option it offers on the bottom left-hand corner to add a video you want. You can also go direct to drag and drop it to a instructed area.
Step 2 Select output format under Encoding mode
Conveniently, once the video is fully loaded, the program will play it automatically. At this point, you can click to enter the "Format" section and check "Encoding mode" to set an output format. Besides, it's doable to hit the upper-right gear icon to adjust codec, resolution and more.
Step 3 Rotate a video and save
Now go back to the main interface of this handy program and click on the "Edit"
option to rotate with its inbuilt video editor. You will soon get to a pop-up window, from where you can find "Rotation" under "Adjust" tab. Herein, watch the imported video in preview window and rotate clockwise or anticlockwise to any 90°. When it meets your need and put in a correct orientation, you can press "OK" > "Start" to export and save on a local folder.